/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
/*
Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
Copyright (c) 2018, D. R. Commander. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright 
     notice, this list of conditions and the following disclaimer in 
     the documentation and/or other materials provided with the distribution.

  3. The names of the authors may not be used to endorse or promote products
     derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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*/

package com.jcraft.jsch;

public interface Identity{

  /**
   * Decrypts this identity with the specified pass-phrase.
   * @param passphrase the pass-phrase for this identity.
   * @return <tt>true</tt> if the decryption is succeeded
   * or this identity is not cyphered.
   */
  public boolean setPassphrase(byte[] passphrase) throws JSchException;

  /**
   * Returns the public-key blob.
   * @return the public-key blob
   */
  public byte[] getPublicKeyBlob();

  /**
   * Returns the finger-print of the public key.
   * @return finger print
   */
  public String getFingerPrint();

  /**
   * Signs on data with this identity, and returns the result.
   * @param data data to be signed
   * @return the signature
   */
  public byte[] getSignature(byte[] data);

  /**
   * @deprecated The decryption should be done automatically in #setPassphase(byte[] passphrase)
   * @see #setPassphrase(byte[] passphrase)
   */
  @Deprecated
  public boolean decrypt();

  /**
   * Returns the name of the key algorithm.
   * @return "ssh-rsa" or "ssh-dss"
   */
  public String getAlgName();

  /**
   * Returns the name of this identity. 
   * It will be useful to identify this object in the {@link IdentityRepository}.
   */
  public String getName();

  /**
   * Returns <tt>true</tt> if this identity is cyphered.
   * @return <tt>true</tt> if this identity is cyphered.
   */
  public boolean isEncrypted();

  /**
   * Disposes internally allocated data, like byte array for the private key.
   */
  public void clear();
}
